i-80 Gold Declares First Granite Creek Reserve, Lone Tree Refurbishment Anchors Phased Production Growth
Original announcement by cruxinvestor on
- Company
- i-80 Gold Corp.
- Ticker
- IAU
- Exchange
- Unavailable
- Region
- Nevada
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Resource update, Other
- Extracted
- 2026-10-02 16:32:14 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
i-80 Gold has declared its first reserve at the Granite Creek Underground project, totaling 557,000 oz at 7.87 g/t gold. The company is also advancing the refurbishment of its Lone Tree autoclave to improve processing recoveries and targeting significant growth through the Mineral Point project.
Reasoning: The declaration of the first reserve at Granite Creek is a major de-risking milestone for the company's transition to a mid-tier producer.
Positive factors
- First reserve declaration for Granite Creek Underground
- High grade of 7.87 g/t gold
- Strong NPV of $118 million
- Strategic autoclave refurbishment to improve recoveries
Negative factors
- Aggressive permitting timeline at Mineral Point
- Labour cost pressure at Lone Tree
Facts used in scoring: 1
Classification and evidence
Probable Reservepositive
Indicated Resource with demonstrated economic viability after applying modifying factors.
Why it applies: The document declares an initial proven and probable reserve for Granite Creek Underground.
Evidence · text
“converted part of Granite Creek's resource into an initial proven and probable reserve”
Maiden Resourceneutral
First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component.
Why it applies: This is the first reserve declaration for the Granite Creek Underground project.
Evidence · text
“Declares First Granite Creek Reserve”
Extracted facts
Stored fact records: 1. Some facts used in scoring do not have a stored record.
Resource Estimates (1)
probableGranite Creek Underground · goldGrade: 7.87Grade Unit: g/tContained Metal: 557000Contained Unit: ozView all detailsHide details
Identity
- Project
- Granite Creek Underground
- Commodity
- gold
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- IAU
Resource scope
- Estimate type
- reserve
- Resource group id
- resource:f00af6e162418af965f5
- Deposit or zone
- Granite Creek Underground
- Mining method
- combined
Resource Data
- Category
- probable
- Grade
- 7.87
- Grade Unit
- g/t
- Contained Metal
- 557000
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2026-09-01
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-02T00:00:00.000Z
Reasoning: Initial reserve declaration at high grade.
Positive factors
- First reserve declaration
- High grade
Evidence · text
“The September 2026 feasibility study converted part of Granite Creek's resource into an initial proven and probable reserve of 557,000 oz at 7.87 g/t gold.”
Tags used in scoring
Probable Reservepositive
Indicated Resource with demonstrated economic viability after applying modifying factors.
Why it applies: category is "probable"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.